#include <linux/init.h>
#include <linux/module.h>
#include <linux/netdevice.h>

#define DRIVER_NAME "my_driver"

static struct net_device *my_dev;

static int my_dev_open(struct net_device *dev) {
    // 初始化网络设备
    netif_start_queue(dev);
    return 0;
}

static int my_dev_stop(struct net_device *dev) {
    // 停止网络设备
    netif_stop_queue(dev);
    return 0;
}

static netdev_tx_t my_dev_xmit(struct sk_buff *skb, struct net_device *dev) {
    // 将数据包发送到目标地址
    return NETDEV_TX_OK;
}

static const struct net_device_ops my_dev_ops = {
    .ndo_open = my_dev_open,
    .ndo_stop = my_dev_stop,
    .ndo_start_xmit = my_dev_xmit,
};

static void my_dev_setup(struct net_device *dev) {
    // 初始化网络设备参数
    ether_setup(dev);
    dev->netdev_ops = &my_dev_ops;
}

static int __init my_driver_init(void) {
    // 注册网络设备驱动程序
    my_dev = alloc_netdev(0, DRIVER_NAME, NET_NAME_UNKNOWN, my_dev_setup);
    if (!my_dev) {
        printk(KERN_ERR "Failed to allocate network device\n");
        return -ENOMEM;
    }
    register_netdev(my_dev);
    printk(KERN_INFO "Network device registered\n");
    return 0;
}

static void __exit my_driver_exit(void) {
    // 注销网络设备驱动程序
    unregister_netdev(my_dev);
    free_netdev(my_dev);
    printk(KERN_INFO "Network device unregistered\n");
}

module_init(my_driver_init);
module_exit(my_driver_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Your Name");
MODULE_DESCRIPTION("A simple network device driver");

